This is the likely reason for your slow heart rate.
Of the heart medications, digoxin is the most dangerous if the levels get too high. If your take digoxin, call your doctor now for advice. Don't take another dose until you have talked with your doctor.
For other medications that slow the heart rate, a heart rate slightly less than 50 is probably okay as long as you feel fine. If you are especially fatigued, call your doctor's office for advice regarding potentially adjusting your medications.
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